问题
sudo pip3 install scikit-learn (any module really just using most recent attempt)
sudo pip3 install -U scikit-learn
sudo -H pip3 install -U scikit-learn
sudo -H pip3 --default-timeout=200 install -U scikit-learn
sudo python3 -m pip install scikit-learn
every command and any combination of the above results in the same error: Read timed out. The error always occurs at the same point (scikit-learn happens at 24%). I am using the latest version of pip(8.1.2) and I am on ubuntu mate 16.04. The exact error is:
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/_vendor/requests/packages/urllib3/response.py", line 228, in _error_catcher
yield
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/_vendor/requests/packages/urllib3/response.py", line 310, in read
data = self._fp.read(amt)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/_vendor/cachecontrol/filewrapper.py", line 49, in read
data = self.__fp.read(amt)
File "/usr/lib/python3.5/http/client.py", line 448, in read
n = self.readinto(b)
File "/usr/lib/python3.5/http/client.py", line 488, in readinto
n = self.fp.readinto(b)
File "/usr/lib/python3.5/socket.py", line 575, in readinto
return self._sock.recv_into(b)
File "/usr/lib/python3.5/ssl.py", line 929, in recv_into
return self.read(nbytes, buffer)
File "/usr/lib/python3.5/ssl.py", line 791, in read
return self._sslobj.read(len, buffer)
File "/usr/lib/python3.5/ssl.py", line 575, in read
v = self._sslobj.read(len, buffer)
socket.timeout: The read operation timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/commands/install.py", line 310, in run
wb.build(autobuilding=True)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/wheel.py", line 750, in build
self.requirement_set.prepare_files(self.finder)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/req/req_set.py", line 370, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/req/req_set.py", line 587, in _prepare_file
session=self.session, hashes=hashes)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/download.py", line 810, in unpack_url
hashes=hashes
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/download.py", line 649, in unpack_http_url
hashes)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/download.py", line 871, in _download_http_url
_download_url(resp, link, content_file, hashes)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/download.py", line 595, in _download_url
hashes.check_against_chunks(downloaded_chunks)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/utils/hashes.py", line 46, in check_against_chunks
for chunk in chunks:
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/download.py", line 563, in written_chunks
for chunk in chunks:
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/utils/ui.py", line 139, in iter
for x in it:
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/download.py", line 552, in resp_read
decode_content=False):
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/_vendor/requests/packages/urllib3/response.py", line 353, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/_vendor/requests/packages/urllib3/response.py", line 320, in read
flush_decoder = True
File "/usr/lib/python3.5/contextlib.py", line 77, in __exit__
self.gen.throw(type, value, traceback)
File "/usr/local/lib/python3.5/dist-packages/pip-8.1.2-py3.5.egg/pip/_vendor/requests/packages/urllib3/response.py", line 233, in _error_catcher
raise ReadTimeoutError(self._pool, None, 'Read timed out.')
pip._vendor.requests.packages.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='pypi.python.org', port=443): Read timed out.
回答1:
Setting the default socket timeout to a higher value (e.g. 1000 seconds) should fix your problem:
pip3 install -U --timeout 1000 scikit-learn
The suitable timeout value, of course, depends on your connection speed and quality. Note that the socket timeout, AFAIK, is the maximum time the socket-level data flow is interrupted before an error is raised, not the total time needed to download packages.
回答2:
Set timeout to a high value. Also it's recommended to run the below command always:
python3 -m pip install --user --timeout 10000 scikit-learn
You maybe asking why should I enter python3 -m as extra and type a few more strings. It's basically to avoid conflicts when you working with multiple virtual environments.
Python core developer Brett Cannon explains why you should install packages like this in his article A quick and dirty guide on how to install python packages.
来源：https://stackoverflow.com/questions/38662795/pip3-read-time-out-error